Mechanically operated bell



June 15,' 1948. F. T. GARCEAU 2,443,559

MECHANICAL-LY OPERATED BELL Filed Aug. 9, 1946 2 Sheets-Sheet 1 June 15,3.9428. F. "r. GARCEAU 2,443,559

' MECHANICALLYY OPERATED BELL Filed Aug. 9, 1946 2 Sheets-Sheet 2 30WAS:

\ n a t 171? agre Patented June 15, 1948 UNITED STATES PATENT OFFICE2,443,559 MECHANICALLY OPERATED BELL Fred T. Garceau, Negaunee, Mich.Application August 9, 1946, Serial No. 689,475

This invention relates to a, mechanically operated bell especiallydesigned for use in signalling in factories, mines, or any place wherethere is excessive noise, due to operating machinery.

An important object of the invention is to provide a bell which isoperated by mechanical means that will insure the positive operation ofthe bell at all times, and one which will give a signal suificientlyloud to be heard over the noise of the factory, or room in which thedevice is positioned.

Still another object of the invention is to provide a bell of thischaracter which embodies but few movable parts, and one which can bemanufactured at a minimum cost.

With the foregoing and other objects in view which will appear as thedescription proceeds, the invention consists of certain novel details ofconstruction and combinations of parts hereinafter more fully describedand pointed out in the claim, it being understood that changes may bemade in the construction and arrangement of parts without departing fromthe spirit of the invention as claimed.

Referring to the drawings Figure 1 is an elevational view of amechanically operated bell, constructed in accordance with theinvention.

Figure 2 is a longitudinal sectional view through the bell, taken online 2-2 of Fig. 1.

Figure 3 is a sectional view taken on line 33 of Fig, 1.

Figure 4 is a sectional view taken on line 4-4 of Fig. 1.

Figure 5 is a fragmental sectional View through the tapper-operatingmechanism, illustrating the position of the trigger with respect to thetapper, when the tapper spring is placed under tension.

Referring to the drawings in detail, the reference character 5 indicatesthe bell base, which is formed with openings for the reception ofsecuring screws or bolts, whereby the base may be secured to asupporting surface.

The bell includes the stand 5, which is secured to the base, by means ofthe the screws 1, the stand 6 being provided with a post 8 formed withinternal threads, to accommodate a bolt 9 that secures the bell properID, to the stand. The spacer II which is disposed between the post 8 andbell I0, provides means to insure the vibrations of the bell, so thatthe sound produced by the bell will not be deadened.

The mechanical operating means forming the essence of the presentinvention, is supported ad- 1 Claim. (01. 116-152) jacent to the bellI0, and comprises a plate l2 which is formed with a right-angled endportion I3 that rests against the base 5, supporting the plate l2 inspaced relation with the base 5.

At the opposite end of the plate I2, is an angle plate M which extendsover one edge of the plate I2, the angle plate being formed with anopening I5 that'registers with the open end of the tubular tapperhousing I6, which is secured to the plate I2 by means of the clip I! andscrews |8 which extend through openings in the clip, as clearly shown bythe drawings. A similar clip 19 embraces the lower end of thecylindrical tapper housing I6.

The tapper housing I6 is formed with an elongated opening, disposedadjacent to the lower end thereof, which opening accommodates the lug20'which is carried by the tapper bar 2| that moves within thecylindrical tapper housing I6, as clearly-shown by Fig. 1 of thedrawings. The reference character 22 indicates the tapper which slideswithinthe upper end of the housing I6, and

is engaged by the tapper bar 2|, as the tapper bar 2| is pulledupwardly. Since the lug 20 engages the upper end of the slot or openingin which it moves, it will be seen that the movement of the tapper bar2| within the housing I6, will be restricted, and since the tapper 22 isof a length to be normally housed by the housing I6, the tapper 22 willimmediately fall to its normal position as shown by Fig. 1 of thedrawings, after it has been moved outwardly to strike the bell and causea signal.

Thus it will be seen that due to this construction, the tapper will notin any way retard vibrations of the bell to curb its sounding qualities.

The trigger which operates the tapper bar 2| is indicated by thereference character 23, and is in the form of a bell crank leverpivotally mounted on the plate I2, by means of the pivot screw 24.

Pivotally mounted on the upper end of the trigger 23 is the head 25which is of a construction to move into engagement with the lug 20 ofthe tapper bar 2|, when the trigger 23 is operated. Since the head 25moves in the arc of a circle, it will be obvious that as the head movesdownwardly, the tapper bar 2| will be moved against the tension of thecoiled spring 26 mounted within the housing I6 directly below the tapperbar.

As the trigger 23 returns to its inactive position, the head 25 beingpivotally mounted on the trigger, swings downwardly as the head 25 en- 3ages the lug 20, the spring 2! pulling the head to the position shown byFig. 1 of the drawing as the lug passes the head. The laterally extendedlug 20' engaging the lower edge of the upper end of the trigger 23,restricts upward movement of the head 25.

The coiled spring 21 has one of its ends connected with the head .25,while the opposite end thereof connects with the angle-plate M, theaction of the spring 21 being to normally return the trigger 23, to itsoperating position.

Secured to the other end of the trigger 23, is a coiled spring 28 thathas one of it-s'endssecured to the plate l2, by means of the bolt 29.This spring 28 is of the contractile type and also acts to swing thetrigger -23 to its operating position, after it has been released.

The reference character 30 indicates-thepull cable which has connectionwith the lower end of the trigger 23, by means of the bolt and plateassembly 3i. A bracket 32 is mounted adjacent to the lower end of thetrigger 23 and is provided with flanges '33 and 34 at its ends, theflanges acting as stops for the trigger 23, limiting themovement of thetrigger.

In operation, when it is desired to sound the bell, the pull cable 30 isoperated'to pull that end of the trigger to which it is connected. Thesprings 27 and28 are now placed under tension, and as the head 25swingsin the arc of a circle, the head engages "the lug- "moving the lugdownwardly against the action of thespring 26 which is compressed withinthe lower portion of the housing 16. As the head passes the lug 2!}, thespring 26 forces the tapper bar 2| against the tapper 22 which is thrownagainst the bell Iii causing a signal to be sounded. Since the triggerbar 2| is'restrictedin its movement within the housing l6, it will beobvious'that the tapper 22 will return to the position as shown b 'Fig.1 of the drawings, immediately after it has struck the bell.

Due to this construction, it will be obvious that the operation of thebell tapping mechanism will be positive at all times.

What is claimed is:

In a mechanically operated bell, a base, a bell mounted on the base, acylindrical tapper housing mounted on the base directly under the bell,said housing having an elongated opening formed in the wall' thereof,s'aid'tapper housing having an open end disposed adjacent to the bell, avertically moving tapper loosely mounted within the tapper housing andadapted to strike the 'b'ell a spring-pressed tapper operating baroperating within the housing and adapted to strike the tapper, forcingthe tapper into engagement with the bell, a lug on the tapper bar, saidlug being extended through the elongated opening, a trigger in the formof a bell crank lever pivotally mounted on the base, a pivoted head onthe free upper end of the trigger moving in the arc "of a circle andengaging the lugmoving the'tapper bar'down'wardly-as the bell cranklever is operated, said head snapping past the lug releasing the'tapperto the action of the spring whereby the tapper is forced into contactwith the bell, and said trigger head adapted to swing downwardlyclearing said lug asthe trigger returns to its normal position.

FRED T. GARCEAU.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,357,915 Treanor Nov. 2, 1920FOREIGN PATENTS Number H Country Date 125,896 Great Britain Apr.'22,1919

